RFR: 8282640: Create a test for JDK-4740761

[Srinivas Mandalika]

On Fri, 4 Mar 2022 05:35:38 GMT, Srinivas Mandalika <smandalika at openjdk.org> wrote:

> Create a test for [JDK-4740761](https://bugs.openjdk.java.net/browse/JDK-4740761)
> 
> The issue observed is in a JFrame with a JTextField and a JScrollPane which contains focused component. When the JScrollPane was
> is removed from its parent, focus stays with the the scroller
> of the removed JScrollPane, instead of moving to the TextField.
> 
> The test verifies the same - i.e. it verifies that the removal of the scrollpane moves the focus to the JTextField present in the JFrame.
> This review is for migrating tests from a closed test suite to open.

This review is for migrating tests from a closed test suite to open.

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PR: https://git.openjdk.java.net/jdk/pull/7686